Method export fails when using RegistrationBuilder

I have been experimenting with the latest MEF2 Preview 3 code drop and have been having trouble with method export when I include a RegistrationBuilder instance as the ReflectionContext parameter for an AssemblyCatalog. Here is a small piece of code that
demonstrates the fault, which throws an ArgumentException "MethodInfo must be a runtime MethodInfo object." when it tries to satisfy the imports.